//
// Copyright (c) 2010 Luís Reis
//
// MIT License
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;
using Pine.Core;
using Pine.IO;

namespace Pine.CodeGen
{
	public class Library
	{
		public IDictionary<string, FieldInfo> fields = new Dictionary<string, FieldInfo>();
		
		public static readonly Library IOLibrary = new Library("io");
		
		public Library (string name)
		{
		}
		
		static Library () {
			FieldInfo iotype = typeof(IOStream).GetField("IOType");
			FieldInfo console = typeof(Pine.IO.Console).GetField("ConsoleValue");
			
			IOLibrary.fields["iostream"] = iotype;
			IOLibrary.fields["console"] = console;
		}
		
		public virtual void GenerateIL(ILGenerator ilGenerator, LocalBuilder globalScope) {
			foreach (string key in fields.Keys) {
				FieldInfo field = fields[key];
				
				ilGenerator.Emit(OpCodes.Ldloc, globalScope);
				ilGenerator.Emit(OpCodes.Ldc_I4_1);
				ilGenerator.Emit(OpCodes.Ldstr, key);
				ilGenerator.Emit(OpCodes.Ldsfld, field);
				ilGenerator.Emit(OpCodes.Callvirt, typeof(IScope).GetMethod("Declare"));
			}
		}
	}
}

